I have a second floor condo that is getting remodeled. I am replacing the carpet and my subfloor is 1.5" of gypcrete over 5/8" plywood. The condo is over 30 years old and the gypcrete is all cracked and flaking off. My contractor wants to replace the gypcrete with 2 pieces of 3/4" plywood glued together. Can he do this? Thanks.
There is a residential unit below. Would the (2) 3/4" pieces of plywood meet the required separation?